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Old 10-04-2012, 01:47 AM   #1
Aug 2006
Posts: 258
Liked 16 Times on 11 Posts

I have an old bottle of star san, about 6 years old. Do you know if it is still ok to use ? I know you have to check the ph to make sure the product is still working but I can't find any ph paper strips that go below 6 ! Besides ordering online, where can I find a ph kit that goes well below 6 ?

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Old 10-04-2012, 12:29 PM   #3
Brewskii's Avatar
May 2011
Williamsburg, Va
Posts: 1,153
Liked 128 Times on 68 Posts

Try this... It's surly not exact but it's a ghetto way to get an idea.

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Old 10-04-2012, 04:11 PM   #4
tally350z's Avatar
May 2011
Tallahassee, FL
Posts: 1,288
Liked 90 Times on 75 Posts

Maybe go down to a pool place and get some standard ph strips that go below 6? just quick and easy. Or not risk it and buy a new bottle of starsan.
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Primary - Smoked Belgium
- Burton IPA, Munich Lager, Cream Ale
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Old 10-05-2012, 05:00 PM   #5
Apr 2011
., Connecticut
Posts: 1,497
Liked 44 Times on 42 Posts

it should be fine, but i would get some pH strips that go down to <2, make a batch at the right concentration, and make sure that the pH is at or below ~2.5

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